Turn-table



(No Model.) 2 SheetsSheet-- 2.

J. G. H. STUT.

TURN TABLE.

No. 425,151. Patented Apr. 8, 1890.

was mums PETERS cm, mom-mum, WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

JOHN OH. H. STUT, OF SAN FRANCISCO, CALIFORNIA.

TURN-TABLE.

SPECIFICATION forming part of Letters Patent No. 425,151, dated April 8, 1890.

Application filed December 20, 1889. Serial No. 334,422- (No model.)

To all whom it may concern:

Be it known that I, JOHN OH. H. STU'I, a citizen of the United States, residing in the city and county of San Francisco, State of California, have invented an Improvement in Turn-Tables; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to an improved construction for turn-tables which are specially applicable for use upon cable railways, where it is necessary to transfer a car from one track upon which it arrives at the table to another track upon which it is moved in another direction after leaving the table.

The object of my invention is to provide a turning-table so shallow in depth that it will allow the endless traveling cable to pass beneath it without change of direction, while a slotted tube or tubes are built into the top of the table, so that the grip may pass through after letting go the cable. 7

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a plan view of aportion of the table, showing the frame-work without a closed bottom. Fig.2 is an elevation of the same. Fig. 3 is a plan viewshowing the bottom of sheet-iron withopenings cut through it. Fig. 4 is a transverse section showing a portion of the tableand a slotted tube, with angle-braces securing the bottom of the table to the sides of the tube. Fig. 5 is a plan View of the same, Figs. 6, 7, 8, 9, 10, and 11 are transverse sections showing the different forms of beams from. which the table is constructed. Fig. 12 is a planviewof the table with a single central track and tube.

In the former patent issued to me August 6, 1889, No. 408,443, I have shown a cablerailway turn-table made shallow, so as to allow the cable to pass beneath withoutchange of direction.

My present invention contemplates certain improvements and details of construction.

In the formation of the tube or tubes which extend across the table equidistant from the center of rotation of the table when two tubes are used, and over the center when one tube is used, and in line with the cable tubes or tunnels of the road-bed, I employ angle-iron orsteel plates, which are bolted or riveted together in any suitable manner to produce the greatest strength.

In Fig. 2 I have shown the bottom portion of a Usection A, having angle-iron or steel plates B extending along and riveted upon each side exterior to the section, and having the horizontal flanges riveted through the bottom plates 0 of the table. The sides of the tube are formed ofvertical plates D, and to the inner upper edges of these plates are bolted the angle-plates E, the inner edges of which approach each other, so as to form the slot through which the grip-shank enters the channel. Upon the outer sides of the vertical plates are the angle-plates F, and these are riveted through plates E and D.

G Gr are beams, which extend radially or approximately at right angles from the tubular channel or channels above described, and have theirends united to the channel by angle-plates and braces riveted to the top and bottom flanges of the beams, so as to form a rigid continuous structure. These iron or steel beams G may be made either in the usual form of I-beams, as shown. in Fig. '7, or preferably as Z-beams, in which one flange from the top and one flange from the bottom are left off when rolling the beam, so'as to make them lighter, while the remaining flanges are made something wider to give better opportunity for riveting. M these girders may be built up of vertical plates with T or angle iron or steel riveted:

to the top and bottom, as shown in Figs. 8, 9, 10, and. 11. Across the bottom of these beams I rivet sheets of iron, so as to form a close and strong bottom, these sheets being preferably about one-fourth of an inch in thickness, so as to add to the rigidity of the table, and at the point where the sheets forming the bottom plates abut against each other I cover the meeting edges with other plates I, which'are called butt-straps, these straps being riveted. to the edges of the meeting plates, so as to unite the whole into a rigid and continuous bottom.

In some cases where it is desirable to make the table lighter it is done by cutting out square or other suitable openings in the bottom plates between the beams or girders previously dcscribed, and in some'cases the en tire bottom may be left off.

If desired,-

ICO

At the places where the radial beams or girders abut against the sides of the tubular channel they are united by rivets passing through the top and bottom flanges of the girders and the angle-iron plates which project from the exterior sides of the tube.

J J are triaugularly-shaped angle-iron or steel braces, which abut against the sides of the tube between the girders and are riveted thereto. The bottom edges of these plates extend along upon the bottom plates of the table and are riveted thereto, so as to form strengthening-braces between the table and the tube. If two tubes are used upon the table, they are united by the girders and braces above described. The outer ends of the girders are cut so that they fit against the interior of the circular rim L, which extends entirely around the table, and is secured to the ends of the girders by cutting off the web of the girder, so as to leave one or both of the flanges, which may be turned up or down at right angles and be riveted to the rim; or they may be fastened by pieces of angle-iron or steel riveted to girders and rim. This rim is a heavy hoop of steel or iron of considerable thickness, having a depth about equal to the thickness of the tube, and by its attachment to the ends of the girders, as above described, it gives great stiffness to the structure. This rim also forms the surface against which the frictional brake acts to stop the table in its proper place when it is turned around.

Angle-iron or steel bars H are bent so as to correspond in curvature with the vertical surrounding rim of the table, and these flanges are riveted to the bottom plates of the table, and also to the vertical rim or hoop which surrounds the table, thus giving the table the additional strengthening eflcct of this vertical rim which surrounds it.

Across the tops of the girders and parallel with the tube or channel are fixed iron strips or plates II, which are riveted to the top flanges of the girders in a manner correspending with the riveting of the bottom flanges to the bottom plates of the table, and the ends of these straps are bent, so as to be riveted to the vertical rim or hoop which surrounds the table. It will be manifest that two parallel tracks may extend across the table, corresponding with the two lines on, the roadway, or when used at the end of a line a single track may be laid across the center. In the latter case the tracks of the roadway will be curved, so that the track on the table will coincide with either main track by turning the table to the proper position.

By thus building the table of the angleiron or steel girders and top and bottom plates, and uniting the girders with the tubular channel or channels which extend across the table, and forming the bottom of the channel or channels as above described, I am enabled to make the table very thin and strong and to build into the table the tubular channel or channels through which the grips and grip-shanks may pass wheindisengaged from the cable, while the latter is allowed to pass below the table without any change of direction from its ordinary line of travel.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A turn-table consisting of tubes built of angle or U iron or steel with strengthening an gle-plates, the transverse girders extending between the tubes and the periphery of the table, the rim or band surrounding the table and bolted to the tubes and girders, a bottom plate, to which the girders and tubes are cured, and plates or straps extending across the tops of the girders and riveted to the top flanges of the girders, substantially as herein described.

2. A turntable consisting of one or more tubes, the transversely-arranged girders abut-' ting against said tubes and united thereto by strengthening angle-plates and rivets, plates extending across the top of said girders and riveted to their upper flanges, a bottom composed of sheets abutting against each other and having the b utt-straps covering the meeting line of the plates and bolted to saidplates, and a surrounding rim or flange riveted to the exterior ends of the tubes and the trans verse girders, and having the angle-plate or flange and rivets, whereby the lower edge of the band is connected with the bottom plate of the table, substantially as herein described.

In witness whereof I have hereunto set my hand.

.IOIIN (III. II. STUT. \Vitnesses:

S. II. NOURSE, .I. ll. I-Enoon. 

